I've stopped playing games.

Is it normal for me to completely stop playing games at 17? I just don't find them fun anymore.

Good for you, now you're not wasting time. So try use the time for learn some of programming languages.
I'm still wasting time, World of Warcraft and APEX are too hard to handle.

Me too around 18 years old I turned to other activity and today 22 years old I play a game less than when I was a teenager but good times change